I came across my grandfather’s Canon AE-1 a few days ago. I got the shutter to trigger one time, then it didn’t work.
The internet says a non-functioning shutter could be due to a dead battery. The camera hasn’t been used in years (decades?). On a whim I ordered a new battery.
It arrived today and the shutter is working great! I’m guessing it triggered once before the battery swap due to a remaining charge in a capacitor, which amazes me thinking about it.
Time to buy some film…